Improvement in apparatus for rendering and drying animal matter



;J.. J'. CRAVEN.

improvement in Apparatus f0; Rendering and Drying Animal Matter.

No. 132,636. Patented Oct. 29,1872.

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JOHN J CRAVEN, OF JERSEY CITY, NEW JERSEY.

IMPROVEMENT IN APPARATUS FOR RENDERING AND DRYING ANIMAL MATTER.

Specification forming part of Letters Patent No. 132,636, dated October29, 1872.

To all whom it may concern:

Be it known that I, JOHN J. CRAVEN, M. 1)., of Bergen District, JerseyCity, in the State of New Jersey, have invented certain new and usefulImprovements in Apparatus for Rendering and Drying Animal Matter, ofwhich the following is a specification:

My present invention is an improvement upon those already patented tome, bearing date the 17th day of' September, and October 15th, 1872, forthe treatment of animal matter in the extraction of the oils therefrom,effecting the drying of the said matter or residuum and thedecdorization of the noxious gases generated during the operations. Theimprovements herein claimed have for their object the simplification andpractical utility of the apparatus in carrying out two of the principalfeatures of the operation-viz., in the decantation of the oils or fattymatter, and the sew crage or drainage ofthe working-chamber. To

the accomplishment of these ends, therefore,

the invention which forms the subject-matter of this patent consists ofa receiving-box for the oils or fatty matter located and arranged on theoutside of the head of the vessel projecting outwardly and inwardly andcommit nicatin g with the working-chamber at the top thereof, therebyconstituting an outside oil decanting-box having perpetual communicationwith the working-chamber, and which possesses the advantage of beingapplicable to rendering vessels already in use with but little expenseand being-a very convenient device for the purpose. Also, in thearrangement of a drainbox or chest for sewerage purposes, locatedoutside of, and projecting both inward and outward from the head of thevessel, and having open communication with the bottom of the.workingchamber by a strainer, and provided with an outlet-gate, therebyobtaining a thorough-and practical drainage for' the fluids from theworking-chamber after the processes of rendering and drawing off theoils have been eficctedthe device being simple and readily applied torenderin g-tanlrs now in use the special advantages ofthese two devicesbeingin their location and arrangement with respect to the outside ofthe end. of the working-chamber, easy of access, forming no obstructionto the interior or the workingchamber, and of economy for the purposeintended. The apparatus is designed to be the same, or substantially thesame, in construction and operation in the several processes, as 1 sameat the line X X of Fig. 1; and Fig. 3 an s end view of the same.

The apparatus consists of a jacketed vessel or cylinder A, theintermediate surrounding space constituting a steam-heating-chamber,

B, and the interior chamber O,for the reception and treatment of thematter. It is provided with man-holes D at the top and bottom for theintroduction and discharge of the matter after treatment, having anarmed shaft E, for the agitation of the matter under the operation ofdryin g. The matter is treated within the working-chamber 0, under theseparate processes of rendering, elevating, and decanting the oils, anddrying the residuum; and the noxious odors or vapors arising while theseoperations are progressing are deodorized outside of the vessel by meansof a condensing-pump, having direct and open communication with saidworking-chamber, and

worked by the pressure of the steam within the chamber. It is in. theprocesses of decanting the oils and draining the tank that my presentimprovements especially relate. The first of these is effected by meansof a chamber or receptacle, F, secured to the end of the vessel so as toproject therefrom, and extend through the intervening heating-space tothe head of the working-chamber 0, with which it communicates byperforations a in it inner end, so that between the working-chamber andthe receiving-bcx there is a perpetual opening. This box formsaprcjecting pocket and is secured within an opening either in a singleor double head in any suitable manner, so that as the oils or fattymatter are elevated by the inflcwing duct the oils to a receiving-tank,H, above,

the said tube G serving to indicate when the oil is expelled fromtheworking-chamber, as the glass tube G will show the line whichseparates the oil from the water, as will be found more fully describedin my patent aforesaid. The drain or sewer consists also of a box orchest, I, arranged to project from the outer end ofthe vessel on a linewith the bottom thereof,

extends through the intervening chamber B, and communicates with theworking-chamber O by a strainer, 0, arranged flush with the head of theworking-chamber so as to be always open to drain off the fluids'whendesired. It is provided with an outlet-gate, d, placed in a pipe leadingtherefrom to effect this purpose; and in order'to keep its strainer c orcommunicating end from clogging by matter it has also a pipe, 0, leadingto the steam-boiler, through which to let in a blast of steam whichrushes through the strainer c, and frees it completely whenever foundnecessary. It is located, when desired, vertically beneath theoil-receivin g box F, and, like it, may be secured in any suitable wayeither to the inner or outer heads of the vessel. The jacketed vessel isprovided with suitable pipes for the supply of water and steam. The pipef leads to the automatic condensin g-pump for relieving theworking-vessel of the pressure therein, and the pipe 9 leads to theboiler for introducing steam to the working-chamber, while the water isintroduced by the pipe e connecting with the sewer-box I,

and the pipe It leads from the boiler to let in steam to the surroundingchamber B for dryin g. The pipe gfrom the boiler connects with two smalljet-pipes, '5, arranged upon the bottom of the working-vessel on eitherside of the man-hole D with their steam-jets down, so as to prevent themfrom being filled with matter. A valve or cock, j, may, if desired, bearranged in the opposite end of the vessel from the oilreceiving box toserve as a supplementary means for decanting the oils. In all otherrcspects the apparatus is constructed and operated as described in myaforesaid patents. The oil and drain boxes may be arranged on oppositeends and secured by suitable packing to a single or double head.

Having described my invention, I claim under this patent as follows:

1. In apparatus for rendering and dryinganimal matter, I claim a box orchamber arranged upon the outer end of the vessel and projectingtherefrom on a level with the crown of the chamber to receive the oilsor fatty matter from the working-chamber, essentially as described.

2. In apparatus for rendering and drying animal matter, I claim a drainor sewer box arranged upon the outer end of the vessel and projectingtherefrom on a level with the bot tom of the working-chamber to drainthe said chamber, essentially as described.

3. In such an apparatus, I claim the oil-box F and the drain or sewerbox I, arranged one above the other upon the outside end of the vessel,essentially as described.

4. In such an apparatus, I claim the outside oil-box F and the outsidedrain or sewer-box I, arranged to pass through the interveningheating-chamber B of the jacketed vessel and open alike into theworking-chamber, as described.

5. In such an apparatus, 1 claim the outside oil-box and the outsidedrain or sewer box, having perpetual communication with theworking-chamber, as described.

In testimony whereof I have hereunto set my hand this 18th day ofOctober, A. D. 1872.

JOHN J. CRAVEN, M. D.

Witnesses:

G. H. WINFIELD, E. M. PENNINGTON.

